I think this case goes to show how some people believe fantasy and reality are able to influence one another, for better or worse - but ultimately fail to understand that, as content creators, the fault lies solely in the perpetrators themselves.
You are not responsible for the actions of other adult people, only your own. Those who choose to exercise their fantasies take on full responsibilities of their actions and the resulting consequences.
I hope the dev finds peace, but this is ultimately the wrong way to think. Just like giving access to guns doesn't make people shoot each other for funsies, giving people an exhaust for their sexual fantasies doesn't immediately make them deviants.
